Perhaps I’m reading too much into the need for one of these 30+15 to 50 Amp adaptors in the first place, but it seems that the main driver is being able to power 2 air conditioners simultaneously on rare occasions. I’d have to assume that owners of 50A rigs normally request 50A campsites when available.
Anyway, if you think you’ll be using a 30A pedestal frequently, wouldn’t it be more effective to re-wire one of the two Air Conditioners so it can run off 50A “or” be plugged in directly to the pedestal?
Some owners on this forum who have added a second A/C on 30A motorhomes essentially do that. It would take a bit more work initially on a 50A rig to have the option built in, but would provide more operational flexibility in the long run.
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